Lithium iron phosphate battery is a lithium ion battery which uses lithium iron phosphate (LiFePO4) as the cathode material and carbon as the cathode material. The rated voltage of single cell is 3.2V and the cut-off voltage of charge is 3.6V~3.65V.
In the charging process, part of the lithium ion in the lifepo4 batteries are released, transferred to the negative electrode by electrolyte, embedded in the negative carbon material; At the same time, electrons are released from the positive terminal to the negative terminal from the external circuit, maintaining the balance of the chemical reaction. In the discharge process, the lithium ion is released from its own pole and reaches the positive pole through the electrolyte. At the same time, the negative pole releases electrons and reaches the positive pole from the external circuit to provide energy for the outside world.
lifepo4 battery has the advantages of high operating voltage, high energy density, long cycle life, good safety performance, low self-discharge rate and no memory effect.
The electrochemical performance of the cathode material of lithium iron phosphate battery is relatively stable, which determines that it has a stable charging and discharging platform. Therefore, in the charging and discharging process, the structure of the battery will not change, will not burn and explode, and even under special conditions such as short circuit, overcharge, extrusion, needlepoint, it is still very safe.